Cold water paints



United States Patent COLD WATER PAINTS David Pelton Moore, Marlow, N.H.

No Drawing. Application April 9, 1958 Serial No. 727,256

4 Claims. (Cl. 106-91) The present invention relates to improvements in cold water paints, one object of the invention being the provision of a composition or compound of pulverulent ingredients, which when thoroughly commingled and mixed with water produces a paint or covering that is readily applied with brush, spray or roller and which when dry upon indoor or outdoor surfaces, such as non-resinous woods, stucco, rough plastered walls, smooth plastered walls, brick and/or cement, is absolutely water-proof, and forms a homogeneous coating with such surfaces, giving such surface an egg-shell porcelain like surface.

Another object of this invention is the provision of a cold water paint that is composed of readily obtained pulverulent ingredients, which when mixed together and with water, changes chemically, to such an extent, that a homogeneous coating is obtainable, so that walls of masonry or cement that ooze water, can be coated, even when damp, but which when dried are coated with a porcelain-like water-proof coating of lasting qualities and after being dried withstands all climatic conditions.

It has been found that several mixtures of these pulverulent powders may accomplish the desired results, but they will be enumerated in their preferred rotation as follows:

In these examples the parts are all by volume and not by weight.

To anyone of the above may be added one (1) to two (2) parts of pulverized marble dust. One to 3 parts of pulverized silicone is desirable in any of the above.

The Borden PMX casein is given by the Borden Company, as being free-flowing, pale cream to straw color, 95% through 30 mesh, moisture, 83% minimum of protein, 1.75% maximum of fat, 1.0% acidity, pH 4.28 minimum, all on a dry basis.

The dry ingredients of this paint are absolutely composed of 70% of inorganic material or materials, and 30% of organic material or materials, all as pulverulent.

To make approximately one gallon of this paint, 5 to 6 pounds of the powder is employed. The water should be added slowly, while at the same time, the massisstirred,untilaratherthickputtylikemassresults.

Then slightly more water is added to make a thick pourable body. Then let stand for not less than 30 minutes, after which more water can be added to obtain the desirable fluidity for brush and roller application, or slightly thinner for spraying. After using this paint, the implements must be water washed at once, for if left on these, the paint sets and the implements may become unusable.

As this paint is predominately an alkali paint, to color same, alkali colors in powder, although water liquid colors can be used, are mixed with the powder, either at the source of manufacture, or by the user. Thus many various shades can be had to suit the taste of the owner. This paint will not adhere to oily surface or upon freshly painted oil paints, but oil paints will adhere to a dry coating of this paint, and when a priming coat is desirable, this paint can be used, and oil or varnish coating applied thereon when dry.

If metal surfaces, such as galvanized ones, are freed of oil and acids this paint will adhere, and stand outdoor weather, at all usual temperatures, but it requires from 48 to 72 hours to set," drying within 30 minutes, before it becomes water non-soluble, and will not wash off, or be injured by frost or freezing after it is dried and set.

When applied to porous wood surfaces, as chestnut, oak and the like, for indoor trims and for furniture, the surface when coated and dried, can be sandpapered to show the grain, and then varnish coated, to produce an enamel-like grain showing surface, and when pastel colors are used, a most beautiful finish is produced.

This paint when water mixed, forms an adhesive for plasters of difierent bases, as for instance when mixed with saw dust, ground cork and asbestos dust, a workable plaster for coating surfaces and for a base for overlays, it being possible with this paint to have a two or three overlay, on any plaster wall, and as it dries within 30 minutes and has no objectable odor during application and drying, the second and third coat can be applied successively within 30 minutes of the former coating. This is specially desirable for public schools and lavatories, and of course other buildings. As an adhesive for mending broken wooden furniture, it has been found satisfactory.

The ingredients may be varied, that is cement 4 to 7 parts, plaster of Paris 3 to 1 part, casein 3 to 1 parts, and glue 2 to '15 parts all by volume not by weight.

Due to the great adherence quality of this paint, steel and iron structures can be coated, in lieu of red lead paints, for if the surface is clean and no oil on it, this paint either brushed or sprayed on, and permitted to dry and set, renders the metal surface water-resistant, and it can later be painted with this paint or oil paint, or encased in cement, where used to reinforce concrete. This paint for bridge construction, and for superstructures for buildings is much cheaper than red lead and oil, dries in a shorter time, and when set, firmly encases the metal surface against dampness and rain. It does not give a glossy finish, more like an egg-shell porcelain, and can be colored with any alkali coloring matter. Regular Portland cement can be used also.

What is claimed is:

l. A cold water paint the dry ingredients of which arts by volume; plaster of Paris by volume and animal glue 1 part by volume.

2. A pulverized composition of dry powders of Portland cement 5 to 7 parts by volume, plaster of Paris 2 to 1 parts by volume, casein 2 to 1 parts by volume, and animal glue 2 to parts.

3. A cold water paint as claimed in claim 1, wherein the Portland cement is white Portland cement.

4. A composition of pulverent materials to be mixed with water to make a cold water paint, composed of inorganic material 70%, and organic material 30%, the inorganic material being a white Portland cement 5 to 7 parts by volume, and the organic material being casein 5 two parts by volume and animal glue one part by volume.

References Cited in the file of this patent UNITED STATES PATENTS Belcher et a1. Sept. 8, 1896 Haire July 11, 1916 Issacs Aug. 8, 1922 Blaire-McGufie Ian. 5, 1943 

1. A COLD WATER PAINT THE DRY INGREDIENTS OF WHICH ARE PORTLAND CEMENT 5 PARTS BY VOLUME; PLASTER OF PARIS 2 PARTS BY VOLUME; CASEIN 2 PARTS BY VOLUME AND ANIMAL GLUE 1 PART BY VOLUME. 